Purified gum and process of obtaining same.



wrnnrnmnnnnrnmnsnnmor BROOKLYN, new YORK.

PURIIIED GUM AND PROCESS OF OBTAINING SAME.

No Drawing.

To all whom it maz concem: I

Be it known that I, WILLIAM H. BRAD- SHAW, a citizen oftheUnited States of America, residing in Brooklyn, in the county of Kings and State of New York, have invented'certain newland useful Improvements in Purified Gums and Processes of' Obtaining Same, of which the following is a specifioation.-

This invention relates to a process of purifying gums.

One of the objects of the present invention is to provide a simple and practical process of treating resin, gutta, Pontianak and similar rubbery gums, or' their constituents to remove impurities.

Another object is to provide an easy and inexpensive process of removing all objec tionable tastes and principles from such substances whereby they may be used in the arts. V

Another object is to produce a purified ingredient used in the manufacture of chewing gum. Other objects will be ,in part obvious and in part hereinafterpointed out.

The invention accordingly consists in the several steps and the relation and 'order of .one or more of such steps with relation toeach of the others thereof-which will be ex-' emplified in the. hereinafter described process, and the scope of the application of which .will be indicated in the claims that follow.

As is well known to those familiar with the subject,chicle, a gum obtained from the latex, of the sapota tree, and imported from Central American countries, forms an important ingredient in chewing gum. The comparatively high cost of obtaining and subsequently purifying this substance has led to numerous attem tsto produce a satisfactory substitute. uch a substitute has been. found and principal ingredients thereof consist of the purified waste product of deresinated rubber and also gutta, both essential parts of rubber gums. Both of these substances contain either an objectionable taste, or some odor, and poisonous principies which-it is necessary to remove before they can be used in'the makingof artificial chicle. It has been found that these may-be removed by using sugar in solution.

Referring to the process more in detail,

the Waste product of deresinated rubber may be treated as foilowsz -For example,

Specification of Letters Patent.

Patented Mar. 36), 1915?.

Application filed April 25, 1911. Serial No. 623,140.

jPontianak resin, obtained as a by-product 1n .dereslnatmg Pontianak gum, sometimes called gutta jelutong, as sold, contains about 25%- .of moisture,.dirt and particles of'rubber. This-is first partially dried and ground through an 8-mesh screen which removes the particles of rubber. The resin is then ground in water in a pebble mill in the presence of about 5% of sugar, if cane sugar is used, although greater amounts may be used if desired. After grinding the resin in the mill until it will pass to 100 mesh, it is diluted several times with water, boiled and filtered, and then Washed with hot water and then with cold water. The filter cake is then centrifuged and washed in a centrifugal machine and drier.

The process of purifying gutta is quite similar. It is first cut up and sorted to remove the larger particles of dirt, etc., and then placed in a hollander where it is reduced to very small particles. The gutta is then boiled in a 5% sugar solution substantially as above described, in order to remove any objectionable taste. The gutta is then removed and washed on ordinary rolls and hung up to dry.

As above stated, these rubber principles form essential ingredients of a chicle sub stitute and When treated as above, are'suf'nciently pure and free from taste, odorand poisonous matters to be used freely as may be necessary.

It is thus seen that this invention provides a simple and practical process of purifying resins, guttas and similar gums in a quick and inexpensive manner.

As many changes could be made in'carrying out the above process without departing from the scope of the invention, it is intended that all inatter contained in the above description shall be interpreted as illustrative and not in a limiting sense.

I claim: 1

1. A; process of treating gums which consists in treating resin element of a rubbery gum with sugar and thereby removing impurities therefrom.

2. A process of treating gums which consists in treating the resin element of a rubfinally dried on trays in a .ber' gum with a solution of sugar andv retion of sugar heated to approximately 100 0., and thereafter removing the solution and impurities from said resin.

4:. A process of treating gums which consists in treating res1n occurring as a byproduct gum in the 'deresination of Pontianak gum by a 5% cane sugar solution which is subsequently drawn off whereby objectionable features are removed.

6. A process of treating gums which consists in treating resin occurring as a byproduct gum in the deresination of Pontianak gumby boiling the same in a sugar solution which is subsequently drawn ofi' whereby objectionable features are removed.

7. A process of treating gums which consists in reducing rubber gum to-small particles, adding a sugar solution thereto, and after the particles become saturated, removing said solution, whereby the taste and poisonous matters are eliminated.

9. A. composition of matter the major portion'of which is made from a rubber gum having a low per cent. ofrubber and from which the rubber, taste and poisonous matters, which renders the composition objectionable as an ingredient of chewing gum are removed.

WILLIAM HENRY BRADSHAW. Witnesses:

HAMILTON BRADSHAW, SAMUEL. P. BRADSHAW. 

